src/gallium/drivers/svga/svga_swtnl_draw.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "draw/draw_context.h"
  27 #include "draw/draw_vbuf.h"
  28 #include "util/u_inlines.h"
  29 #include "pipe/p_state.h"
  30
  31 #include "svga_context.h"
  32 #include "svga_screen.h"
  33 #include "svga_swtnl.h"
  34 #include "svga_state.h"
  35 #include "svga_swtnl_private.h"
  36
  37
  38
  39 enum pipe_error
  40 svga_swtnl_draw_vbo(struct svga_context *svga,
  41                     const struct pipe_draw_info *info)
  42 {
  43    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = { 0 };
  44    struct pipe_transfer *ib_transfer = NULL;
  45    struct pipe_transfer *cb_transfer[SVGA_MAX_CONST_BUFS] = { 0 };
  46    struct draw_context *draw = svga->swtnl.draw;
  47    unsigned i, old_num_vertex_buffers;
  48    const void *map;
  49    enum pipe_error ret;
  50
  51    assert(!svga->dirty);
  52    assert(svga->state.sw.need_swtnl);
  53    assert(draw);
  54
  55    /* Make sure that the need_swtnl flag does not go away */
  56    svga->state.sw.in_swtnl_draw = TRUE;
  57
  58    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  59    if (ret != PIPE_OK) {
  60       svga_context_flush(svga, NULL);
  61       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  62       svga->swtnl.new_vbuf = TRUE;
  63       assert(ret == PIPE_OK);
  64    }
  65
  66    /*
  67     * Map vertex buffers
  68     */
  69    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  70       if (svga->curr.vb[i].buffer) {
  71          map = pipe_buffer_map(&svga->pipe,
  72                                svga->curr.vb[i].buffer,
  73                                PIPE_TRANSFER_READ,
  74                                &vb_transfer[i]);
  75
  76          draw_set_mapped_vertex_buffer(draw, i, map, ~0);
  77       }
  78    }
  79    old_num_vertex_buffers = svga->curr.num_vertex_buffers;
  80
  81    /* Map index buffer, if present */
  82    map = NULL;
  83    if (info->indexed && svga->curr.ib.buffer) {
  84       map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
  85                             PIPE_TRANSFER_READ,
  86                             &ib_transfer);
  87       draw_set_indexes(draw,
  88                        (const ubyte *) map + svga->curr.ib.offset,
  89                        svga->curr.ib.index_size, ~0);
  90    }
  91
  92    /* Map constant buffers */
  93    for (i = 0; i < Elements(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
  94       if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer == NULL) {
  95          continue;
  96       }
  97
  98       map = pipe_buffer_map(&svga->pipe,
  99                             svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer,
 100                             PIPE_TRANSFER_READ,
 101                             &cb_transfer[i]);
 102       assert(map);
 103       draw_set_mapped_constant_buffer(
 104          draw, PIPE_SHADER_VERTEX, i,
 105          map,
 106          svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer->width0);
 107    }
 108
 109    draw_vbo(draw, info);
 110
 111    draw_flush(svga->swtnl.draw);
 112
 113    /* Ensure the draw module didn't touch this */
 114    assert(old_num_vertex_buffers == svga->curr.num_vertex_buffers);
 115
 116    /*
 117     * unmap vertex/index buffers
 118     */
 119    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 120       if (svga->curr.vb[i].buffer) {
 121          pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
 122          draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
 123       }
 124    }
 125
 126    if (ib_transfer) {
 127       pipe_buffer_unmap(&svga->pipe, ib_transfer);
 128       draw_set_indexes(draw, NULL, 0, 0);
 129    }
 130
 131    for (i = 0; i < Elements(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
 132       if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer) {
 133          pipe_buffer_unmap(&svga->pipe, cb_transfer[i]);
 134       }
 135    }
 136
 137    /* Now safe to remove the need_swtnl flag in any update_state call */
 138    svga->state.sw.in_swtnl_draw = FALSE;
 139    svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
 140
 141    return ret;
 142 }
 143
 144
 145
 146
 147 boolean svga_init_swtnl( struct svga_context *svga )
 148 {
 149    struct svga_screen *screen = svga_screen(svga->pipe.screen);
 150
 151    svga->swtnl.backend = svga_vbuf_render_create(svga);
 152    if(!svga->swtnl.backend)
 153       goto fail;
 154
 155    /*
 156     * Create drawing context and plug our rendering stage into it.
 157     */
 158    svga->swtnl.draw = draw_create(&svga->pipe);
 159    if (svga->swtnl.draw == NULL)
 160       goto fail;
 161
 162
 163    draw_set_rasterize_stage(svga->swtnl.draw,
 164                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
 165
 166    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 167
 168    svga->blitter = util_blitter_create(&svga->pipe);
 169    if (!svga->blitter)
 170       goto fail;
 171
 172    /* must be done before installing Draw stages */
 173    util_blitter_cache_all_shaders(svga->blitter);
 174
 175    if (!screen->haveLineSmooth)
 176       draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 177
 178    /* enable/disable line stipple stage depending on device caps */
 179    draw_enable_line_stipple(svga->swtnl.draw, !screen->haveLineStipple);
 180
 181    /* always install AA point stage */
 182    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 183
 184    /* Set wide line threshold above device limit (so we'll never really use it)
 185     */
 186    draw_wide_line_threshold(svga->swtnl.draw,
 187                             MAX2(screen->maxLineWidth,
 188                                  screen->maxLineWidthAA));
 189
 190    if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
 191       draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE, FALSE);
 192
 193    return TRUE;
 194
 195 fail:
 196    if (svga->blitter)
 197       util_blitter_destroy(svga->blitter);
 198
 199    if (svga->swtnl.backend)
 200       svga->swtnl.backend->destroy( svga->swtnl.backend );
 201
 202    if (svga->swtnl.draw)
 203       draw_destroy( svga->swtnl.draw );
 204
 205    return FALSE;
 206 }
 207
 208
 209 void svga_destroy_swtnl( struct svga_context *svga )
 210 {
 211    draw_destroy( svga->swtnl.draw );
 212 }